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| Patents for Alexander Robbins | |||||
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| Number | Date | Patentee | Title | Type | |
| 819,926 | May 08, 1906 | A. Robbins | Spacing and Dividing Instrument | special purpose gauges | |
| 976,296 | Nov. 22, 1910 | A. Robbins | Miter Box | miter boxes | |